Iowa Northwestern Railroad

Reporting mark: IANW
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Tatonka Ska Trace Trail - Dry Run Arch (Osceola County, Iowa)
Built 1900; abandoned 2004
Abandoned closed-spandrel arch bridge over Dry Run on Tatonka Ska Trace Trail
Derelict/abandoned with rails removed

Tatonka Ska Trace Trail - Little Ocheyedan River Bridge (Osceola County, Iowa)
Built Ca. 1902, Abandoned 2004
Abandoned deck plate girder bridge over Little Ocheyedan River on Tatonka Ska Trace Trail
Intact but closed to all traffic, trail deck added 2018-19

Tatonka Ska Trace Trail - Little Sioux River Bridge (Dickinson County, Iowa)
Abandoned since 2004
Abandoned timber stringer bridge over Little Sioux River on abandoned railroad (former IANW)
Derelict/abandoned with rails removed

Tatonka Ska Trace Trail - Ocheyedan River Bridge (Osceola County, Iowa)
Abandoned 2004
Abandoned steel stringer bridge over Ocheyedan River on Tatonka Ska Trace Trail
Derelict/abandoned with rails removed

Tatonka Ska Trace Trail - Rush Lake Outlet Bridge (Osceola County, Iowa)
Built 1900; abandoned 2004
Abandoned Brick Arch bridge over Rush Lake Outlet on Tatonka Ska Trace Trail
Derelict/abandoned with rails removed

Tatonka Ska Trace Trail - Unnamed Creek Bridge (Dickinson County, Iowa)
Built 1902
Steel stringer bridge over Tributary West Branch Little Sioux River on Tatonka Ska Trace Trail
Open to traffic

Tatonka Ska Trace Trail - West Branch Little Sioux River Arch (Dickinson County, Iowa)
Built 1900; abandoned 2004, Converted to Trail Use 2018
Closed-spandrel arch bridge over West Branch Little Sioux River on Tatonka Ska Trace Trail
Derelict/abandoned with rails removed

Tatonka Ska Trace Trail - West Fork Little Sioux River Bridge (Dickinson County, Iowa)
Built 1902, Abandoned 2004; Converted To Trail Use 2018
Deck plate girder bridge over West Fork Little Sioux River on Tatonka Ska Trace Trail
Awaiting Opening as Iowa Great Lakes Trail